2014 Toyota Avalon Hybrid with a cold engine the engine starts up and runs choppy

EaglewingmdEaglewingmd Member Posts: 2
edited December 2022 in Toyota
I have a 2014 Toyota Avalon Hybrid. With a cold engine the engine starts up and runs choppy, or tough, as if there is a misfire. One time I got a code which said that cylinder 4 was misfiring. I have investigated possible caseus and replaced all spark plugs. Same problem. The checked the coils and the misfire code did not move to another cyliinder. And I have replaced the Camshaft sensor. Nothing fixes it.
This happens with a cold engine, but it also happens at a stop light on start up, after and then the engine shuts down.
Although it doesn't happen 100% it's frequency is increasing. It is close to 80% of start ups.
Any suggestions?

Comments

Sign In or Register to comment.

Your Privacy

By accessing this website, you acknowledge that Edmunds and its third party business partners may use cookies, pixels, and similar technologies to collect information about you and your interactions with the website as described in our Privacy Statement, and you agree that your use of the website is subject to our Visitor Agreement.